Just saw an ad for it when I was at the gym last night! Looks like it's starting Friday 7pm EST/6pm Central. As for what's behind it, it all has to do with syndication rights--not sure if the deal was in place from the beginning or if Spike opted not to renew the syndication rights and TNT swooped in to pick them up or what.

It is more like $yndication right$. But some shows are not exclusive to one cable network or channel anymore. You can watch Andy Griffith, M*A*S*H, Scrubs, and some other shows on more than one channel these days.

I know; this is actually the 3rd consecutive week TNT has aired a marathon starting at 8pm ET/7pm CT. Though I don't know why the listings in TV Guide magazine aren't correct--still. They have Bones and "I Am Legend" listed. I always check the listings online or through my cable; you never know when a schedule will change!